公开(公告)号：US11491463B2

公开(公告)日：2022-11-08

申请号：US16958793

申请日：2019-01-02

Applicant: BASF SE

Inventor： Stephan Bauer ,  Katrin Baumann ,  Markus Toennessen ,  Christophe Bauduin ,  Markus Christian Biel ,  Thomas Daniel

IPC: B01J20/28 ,  A61L15/60

Abstract: Superabsorbent mixtures M comprising at least 70% by weight of superabsorbent A having a liquid absorption of 20 g/g (T20) of less than 300 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 400 s, and at least 5% by weight of superabsorbent B having a centrifuge retention capacity (CRC) of at least 30 g/g.

公开(公告)号：US09790304B2

公开(公告)日：2017-10-17

申请号：US14442501

申请日：2013-11-11

Applicant: BASF SE

Inventor： Thomas Daniel ,  Norbert Herfert ,  Stephan Bauer ,  Katrin Baumann ,  Birgit Reinhard ,  Jürgen Freiberg ,  Rudolf Schliwa

IPC: B01J20/32 ,  C08F220/06 ,  C08F6/00 ,  A61L15/42 ,  A61L15/60 ,  A61L15/22 ,  C08L33/02 ,  A61L15/24 ,  B01J20/26 ,  B01J20/28

CPC classification number: C08F220/06 ,  A61L15/22 ,  A61L15/24 ,  A61L15/42 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28023 ,  B01J20/2805 ,  C08F6/005 ,  C08L33/02 ,  C08L33/08 ,  C08F2222/1013

Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution comprising less than 0.3% by weight of persulfate and at least 0.05% by weight of azo initiator and thermal aftertreatment of the formed polymer particles at less than 100° C. in a fluidized bed for 60 to 300 minutes.

公开(公告)号：US11332550B2

公开(公告)日：2022-05-17

申请号：US16488659

申请日：2018-02-26

Applicant: BASF SE

Inventor： Stephan Bauer ,  Markus Toennessen ,  Christophe Bauduin ,  Katrin Baumann ,  Marco Krüger ,  Andreas Daiss ,  Markus Muehl

IPC: B01J8/24 ,  B01J19/00 ,  B01J19/18 ,  B01J19/24 ,  C08F2/01 ,  C08F220/14

Abstract: An apparatus for production of pulverulent polymers having a reactor for droplet polymerization with an apparatus for dropletization of a monomer solution for the preparation of the polymer. The apparatus for dropletization has holes through which the monomer solution is introduced, an addition point for a gas above the apparatus for dropletization, at least one gas withdrawal point at the periphery of the reactor and a fluidized bed, wherein at least one of the following is fulfilled: an apparatus for increasing turbulence in the gas flow is disposed in the region of the apparatus for dropletization of the monomer solution, an apparatus for increasing turbulence in the gas flow is disposed in the region of the addition point for the gas, the addition point for gas is configured such that elevated turbulence is generated. A process for producing pulverulent polymers, in which an increase in flow turbulence in the gas flow in the region of the apparatus for dropletization also is disclosed.

公开(公告)号：US11142614B2

公开(公告)日：2021-10-12

申请号：US16217740

申请日：2018-12-12

Applicant: BASF SE

Inventor： Thomas Daniel ,  Norbert Herfert ,  Stephan Bauer ,  Katrin Baumann ,  Birgit Reinhard ,  Jürgen Freiberg ,  Christophe Bauduin ,  Katarzyna Dobrosielska-Oura ,  Michael A. Mitchell

IPC: C08J3/24 ,  C08J9/00 ,  A61L15/22 ,  A61L15/42 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28 ,  C08F6/00 ,  C08F220/06 ,  C08F222/10

Abstract: The present invention relates to a process for producing surface-postcrosslinked water-absorbent polymer particles by coating of water-absorbent polymer particles having a content of residual monomers in the range from 0.03 to 15% by weight with at least one surface-postcrosslinker and thermal surface-postcrosslinking at temperatures in the range from 100 to 180° C.

公开(公告)号：US09914112B2

公开(公告)日：2018-03-13

申请号：US15112445

申请日：2015-01-14

Applicant: BASF SE

Inventor： Stephan Bauer ,  Norbert Herfert ,  Jürgen Freiberg ,  Rudolf Schliwa ,  Karl J. Possemiers ,  Robert Bayer

IPC: B01J20/26 ,  C08F2/01 ,  C08F6/00 ,  C08F2/34 ,  B01J20/28 ,  B01J20/30 ,  C08L33/08 ,  C08L33/02 ,  C08L101/14

CPC classification number: B01J20/267 ,  B01J20/28016 ,  B01J20/3085 ,  C08F2/01 ,  C08F2/34 ,  C08F6/001 ,  C08F6/008 ,  C08L33/02 ,  C08L33/08 ,  C08L101/14 ,  C08F220/06 ,  C08F2222/1026

Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase in a reactor comprising a gas distributor (3), a reaction zone (5) and a fluidized bed (27), the gas leaving the reactor is treated in a condenser column (12) with an aqueous solution, the treated gas leaving the condenser column (12) is recycled at least partly to the fluidized bed (27), wherein the gas leaving the condenser column (12) comprises from 0.05 to 0.3 kg steam per kg dry gas and the steam content of the gas entering the gas distributor (3) is less than 80% of the steam content of the gas leaving the condenser column (12).

公开(公告)号：US20180044486A1

公开(公告)日：2018-02-15

申请号：US15552858

申请日：2016-01-26

Applicant: BASF SE

Inventor： Stephan Bauer ,  Yvonne Hagen ,  Katrin Baumann ,  Christophe Bauduin ,  Thomas Daniel ,  Thomas Pfeiffer

IPC: C08J3/24 ,  A61L15/24 ,  C08F220/06 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28

CPC classification number: C08J3/245 ,  A61L15/24 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28004 ,  C08F2/10 ,  C08F220/06 ,  C08J2333/02 ,  C09D133/02

Abstract: The present invention relates to a process for producing surface-postcrosslinked water-absorbent polymer particles comprising polymerizing droplets of a monomer solution, wherein water-absorbent polymer particles having an average particle diameter from 150 to 400 μηη, an amount of water-absorbent polymer particles having a particle size of less than 100 μηη of less than 5% by weight and an amount of water-absorbent polymer particles having a particle size of more than 500 μηη of less than 5% by weight are coated with at least one surface-postcrosslinker and thermal surface-postcrosslinked.

公开(公告)号：US20170320983A1

公开(公告)日：2017-11-09

申请号：US15661543

申请日：2017-07-27

Applicant: BASF SE

Inventor： Thomas Daniel ,  Norbert Herfert ,  Stephan Bauer ,  Katrin Baumann ,  Birgit Reinhard ,  Jürgen Freiberg ,  Rudolf Schliwa

IPC: C08F220/06 ,  C08F6/00 ,  B01J20/28 ,  B01J20/26 ,  A61L15/22 ,  A61L15/60 ,  A61L15/42 ,  A61L15/24 ,  C08L33/02

CPC classification number: C08F220/06 ,  A61L15/22 ,  A61L15/24 ,  A61L15/42 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28023 ,  B01J20/2805 ,  C08F6/005 ,  C08L33/02 ,  C08L33/08 ,  C08F2222/1013

Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution comprising less than 0.3% by weight of persulfate and at least 0.05% by weight of azo initiator and thermal aftertreatment of the formed polymer particles at less than 100° C. in a fluidized bed for 60 to 300 minutes.

公开(公告)号：US20150299404A1

公开(公告)日：2015-10-22

申请号：US14443082

申请日：2013-11-07

Applicant: BASF SE

Inventor： Thomas Daniel ,  Norbert Herfert ,  Stephan Bauer ,  Katrin Baumann ,  Birgit Reinhard ,  Jürgen Freiberg ,  Christophe Bauduin ,  Katarzyna Dobrosielska-Oura ,  Michael A. Mitchell

IPC: C08J3/24 ,  B01J20/28 ,  A61L15/60 ,  A61L15/22 ,  A61L15/42 ,  B01J20/26 ,  C08J9/00

CPC classification number: C08J3/245 ,  A61L15/225 ,  A61L15/425 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28004 ,  B01J20/28011 ,  B01J20/28019 ,  C08F6/008 ,  C08F220/06 ,  C08F222/1006 ,  C08J3/247 ,  C08J9/00 ,  C08J2207/12 ,  C08J2333/02

Abstract: The present invention relates to a process for producing surface-postcrosslinked water-absorbent polymer particles by coating of water-absorbent polymer particles having a content of residual monomers in the range from 0.03 to 15% by weight with at least one surface-postcrosslinker and thermal surface-postcrosslinking at temperatures in the range from 100 to 180° C.

Abstract translation: 本发明涉及通过将具有0.03〜15重量％的残留单体含量的吸水性聚合物颗粒与至少一个表面后交联剂和热敏涂料一起涂覆来制备表面后交联的吸水性聚合物颗粒的方法 在100至180℃的温度下进行表面后交联。

公开(公告)号：US20240110088A1

公开(公告)日：2024-04-04

申请号：US18551803

申请日：2022-03-17

Applicant: BASF SE

Inventor： Harald Dietl ,  Roger Sieg ,  Sebastian Lang ,  Sandra Schnell ,  Stephan Bauer

IPC: C09K5/20

CPC classification number: C09K5/20

Abstract: Novel aqueous coolants with improved temperature stability contain (A) water; (B) at least one alkylene glycol, alkylene glycol monoalkyl ether, or glycerol; (C) at least one phosphate, carbonate, and/or sulfate in the form of its free acids or its salts; (D) at least one hard water stabilizer; and optionally, further inhibitors and typical coolant constituents. The aqueous coolants are useful, for example, in internal combustion engines.

公开(公告)号：US11859059B2

公开(公告)日：2024-01-02

申请号：US16962659

申请日：2019-01-28

Applicant: BASF SE

Inventor： Stephan Bauer ,  Katrin Baumann ,  Markus Toennessen ,  Thomas Daniel ,  Hanno Rüdiger Wolf

IPC: C08J3/12 ,  A61L15/60 ,  B65G53/10 ,  C08L23/08

CPC classification number: C08J3/124 ,  A61L15/60 ,  B65G53/10 ,  C08J2391/06 ,  C08L23/0869

Abstract: A method of pneumatically conveying superabsorbent particles, wherein the superabsorbent particles have been admixed with an aqueous wax dispersion prior to the pneumatic conveying, the wax has a glass transition temperature of at least 65° C. and, based on the untreated superabsorbent particles, from 0.020% to 0.20% by weight of wax has been used.